Educability and group differences (Arthur Jensen, 1973)
https://www.goodreads.com/book/show/786753.Educability_And_Group_Differences http://gen.lib.rus.ec/book/index.php?md5=501f355b6e474bdc0b7f3130dc3bf9c0&open=0 Why read a book from 1973? 41 years old? Well, it was a good read indeed! It is interesting how much of the evidence for racial differences…